Coupled-mode excitations induced in an antiferromagnetically coupled multilayer by spin-transfer torque

Takeshi Seki, Hiroyuki Tomita, Masashi Shiraishi, Teruya Shinjo, Yoshishige Suzuki

研究成果: Article査読

14 被引用数 (Scopus)

抄録

Auto-oscillation of the magnetization in an Fe/Cr/Fe antiferromagnetically coupled multilayer was induced by spin-transfer torque. The acoustic mode, a coupled mode in the multilayer, was excited when a dc bias current was applied at relatively small magnetic fields. The external magnetic field dependence of the oscillation frequency is explained by a macrospin model with an antiferromagnetic coupling field. The excitation of the optical mode is also discussed.

本文言語English
論文番号033001
ジャーナルApplied Physics Express
3
3
DOI
出版ステータスPublished - 2010 3月 1
外部発表はい

ASJC Scopus subject areas

  • 工学(全般)
  • 物理学および天文学(全般)

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